Hydral 710 Aluminium trihydroxide Alcoa Filler >> Aluminum trihydroxide Coatings Other industry >> Paper coatings Alcoa Hydral products are specially precipitated aluminum trihydroxides. They are ultra-fine, crystalline, organic-free, pure white powders. offers similar chemical and physical properties as the Hydral products. Hydral 710 has a median particle diameter of 1 micron with 90% of the powder within 0.5 micron of the median. This product can be tailored for specific applications. It displays outstanding flame-retardant and smoke-suppressant properties for thermoset and thermoplastics as well as elastomeric copolymers. It is particularly useful as filler and coating pigment for fine printing papers for increased brightness, smoothness, and opacity. In coating applications, Hydral is used to impart brightness and gloss for annual report stock and paperboard. It has the added benefit of providing high ink receptivity. Ultra-fine, crystalline, organic-free precipitated aluminum trihydroxide. Used as a filler and coating pigment for fine printing papers. Provides outstanding flame-retardant and smoke-suppressant properties. Increases brightness, smoothness, and opacity. Offers gloss and high ink receptivity.